The use of 8 keys without a mouse was introduced by JAMB to make this year 2017 CBT friendly for candidates.
The 8 keys are;
1. A – for choosing option A in response to questions
2. B – for choosing the B option
3. C – represents option C
4. D – for selecting option D
5. P – represents previous question
6. N – is for next questions.
7. S – is for submit
8. R – is for reverse.
This is a useful info from another platform
JAMB QUESIONS=180
TIME=2hr
This is to notify all jamb candidates that you need to use 40secs on each questions during your jamb exam